Slack: tool descriptions scored

tools/list taken: 2026-10-07 (UTC)
From: smithery.ai/servers/slack
Scoring rules: v2

Scores, issues and names only

This page shows how Slack's tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

This copy comes from Smithery's registry, which keeps each tool's name, description and input schema, but no output schema, annotations or instructions. Points for return values and for marking destructive tools can come out lower than the server's own tools/list would give.

A server with a public URL can be scored as it is today: score from a URL

servers/slack

Average score: 59.8 / 100Cloudy
Tools: 11
Near-identical descriptions: 1

Across the server

Tools whose descriptions are nearly the same

1 of 1 pairs shown, highest description similarity first.
Tool	Tool	Description similarity	Name similarity
Slack_GetMessages	Slack_GetThreadMessages	0.75	0.75

Tools

Slack_InviteUsersToChannel

43 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 15 / 25
Return value: 8 / 15
Constraints and side effects: 0 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_SendMessage

53 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 15 / 25
Return value: 8 / 15
Constraints and side effects: 0 / 10
Examples: 10 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_WhoAmI

56 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 25 / 25
Return value: 8 / 15
Constraints and side effects: 3 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context

Slack_GetUsersInConversation

58 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 15 / 25
Return value: 8 / 15
Constraints and side effects: 0 / 10
Examples: 0 / 10

Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Arcade_ListApps

59 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 25 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_GetConversationMetadata

60 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 15 / 25
Return value: 15 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_ListConversations

60 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 15 / 25
Return value: 15 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Minor
No `required` list, so every argument is optional.no_required
Minor
The description mentions none of its 3 or more arguments.params_not_in_description
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_GetUsersInfo

63 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 20 / 25
Return value: 8 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_ListUsers

66 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 15 / 25
Return value: 8 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Minor
No `required` list, so every argument is optional.no_required
Minor
The description mentions none of its 3 or more arguments.params_not_in_description

Slack_GetMessages

70 / 100Clear

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 15 / 25
Return value: 15 / 15
Constraints and side effects: 0 / 10
Examples: 10 / 10

Minor
Its description is nearly the same as Slack_GetThreadMessages's (similarity 0.75); only the names and schemas tell them apart. Say in this description when to use Slack_GetThreadMessages instead.confusable_pair
Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

Slack_GetThreadMessages

70 / 100Clear

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 15 / 25
Return value: 15 / 15
Constraints and side effects: 0 / 10
Examples: 10 / 10

Minor
Its description is nearly the same as Slack_GetMessages's (similarity 0.75); only the names and schemas tell them apart. Say in this description when to use Slack_GetMessages instead.confusable_pair
Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

What static scoring cannot tell

This score reads only the text of each description and schema: it says what is written, not what a model will do. Short tools whose names already say what they do, such as browser_close, score low here even when models use them well, and in our measurements current models chose the right tool in one step even from one-line descriptions, as long as the names and schemas differed. What the text cannot show, such as what happens over several steps and whether an added sentence helps or misleads, is what an evaluation measures, on the Pro and Team plans.

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